... calories while improving your cardiovascular and aerobic fitness12FT-4W-8P 12FT Trampoline ( DiaΦ366 cm, Height 85 cm) (Max. User Weight 150 ... Cover, Springs, etc..Optional Size: 6FT,8FT,10FT,12FT,13FT,14FT,15FT,16FT Trampoline:1) Steel Tubes: Q195, hot dip galvanized inside ...